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Article

Ortigueira, Manuel D. and Torres, Delfim F.M. and Trujillo, Juan J. (2016) Exponentials and Laplace transforms on nonuniform time scales. Communications in Nonlinear Science and Numerical Simulation, 39, pp. 252-270. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2016.03.010.

Batista, Arnaldo G. and Najdi, Shirin and Godinho, Daniela M. and Martins, Catarina and Serrano, Fátima C. and Ortigueira, Manuel D. and Rato, Raul (2016) A multichannel time–frequency and multi-wavelet toolbox for uterine electromyography processing and visualisation. Computers in Biology and Medicine, 76, pp. 178-191. ISSN 0010-4825. URL: http://dx.doi.org/10.1016/j.compbiomed.2016.07.003.

Ortigueira, Manuel D. and Coito, Fernando J. and Trujillo, Juan J. (2015) Discrete-time differential systems. Signal Processing. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2014.03.004.

Ortigueira, Manuel D. (2015) Comments on “Discretization of fractional order differentiator over Paley–Wiener space”. Applied Mathematics and Computation, 270, pp. 44-46. ISSN 0096-3003. URL: http://dx.doi.org/10.1016/j.amc.2015.08.044.

Ortigueira, Manuel D. and Machado, J. Tenreiro and Trujillo, Juan J. (2015) Fractional derivatives and periodic functions. International Journal of Dynamics and Control. ISSN 2195-268X. eISSN 2195-2698. URL: http://dx.doi.org/10.1007/s40435-015-0215-9.

Martynyuk, Valeriy and Ortigueira, Manuel (2015) Fractional model of an electrochemical capacitor. Signal Processing, 107, pp. 355-360. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2014.02.021.

Ortigueira, Manuel D. and Rivero, Margarita and Trujillo, Juan J. (2015) From a generalised Helmholtz decomposition theorem to fractional Maxwell equations. Communications in Nonlinear Science and Numerical Simulation, 22 (1-3), pp. 1036-1049. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2014.09.004.

Ortigueira, Manuel D. and Tenreiro Machado, J. and Rivero, Margarita and Trujillo, Juan J. (2015) Integer/fractional decomposition of the impulse response of fractional linear systems. Signal Processing, 114, pp. 85-88. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2015.02.014.

Ortigueira, Manuel D. and Rivero, Margarita and Trujillo, Juan J. (2015) Steady-state response of constant coefficient discrete-time differential systems. Journal of King Saud University - Science. ISSN 1018-3647. URL: http://dx.doi.org/10.1016/j.jksus.2015.02.006.

Ortigueira, Manuel D. and Tenreiro Machado, J.A. (2015) What is a fractional derivative? Journal of Computational Physics, 293, pp. 4-13. ISSN 0021-9991. URL: http://dx.doi.org/10.1016/j.jcp.2014.07.019.

Ortigueira, Manuel D. and Trujillo, Juan J. and Martynyuk, Valery I. and Coito, Fernando J. (2015) A generalized power series and its application in the inversion of transfer functions. Signal Processing, 107, pp. 238-245. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2014.04.018.

Bengochea, Gabriel and Ortigueira, Manuel D. (2015) An operational approach to solve fractional continuous–time linear systems. International Journal of Dynamics and Control. ISSN 2195-268X. eISSN 2195-2698. URL: http://dx.doi.org/10.1007/s40435-015-0220-z.

Ortigueira, Manuel D. (2014) On the Recursive Solution to the Normal Equations: Some Other Results [Lecture Notes]. IEEE Signal Processing Magazine, 31 (2), pp. 140-142. ISSN 1053-5888. URL: http://dx.doi.org/10.1109/MSP.2013.2292431.

Ortigueira, Manuel D. (2014) On the particular solution of constant coefficient fractional differential equations. Applied Mathematics and Computation, 245, pp. 255-260. ISSN 0096-3003. URL: http://dx.doi.org/10.1016/j.amc.2014.07.070.

Machado, J. Tenreiro and Lopes, António M. and Duarte, Fernando B. and Ortigueira, Manuel D. and Rato, Raul (2014) Rhapsody in fractional. Fractional Calculus and Applied Analysis, 17 (4), pp. 1188-1214. ISSN 1311-0454. eISSN 1314-2224. URL: http://dx.doi.org/10.2478/s13540-014-0206-0.

Ortigueira, Manuel D. and Laleg-Kirati, Taous-Meriem and Machado, J A Tenreiro (2014) Riesz potential versus fractional Laplacian. Journal of Statistical Mechanics: Theory and Experiment, 2014 (9), P09032. URL: http://stacks.iop.org/1742-5468/2014/i=9/a=P09032.

Ortigueira, Manuel D. (2014) A simple approach to the particular solution of constant coefficient ordinary differential equations. Applied Mathematics and Computation, 232, pp. 254-260. ISSN 0096-3003. URL: http://dx.doi.org/10.1016/j.amc.2014.01.036.

Ortigueira, Manuel and Coito, Fernando (2012) On the Usefulness of Riemann-Liouville and Caputo Derivatives in Describing Fractional Shift-invariant Linear Systems. Journal of Applied Nonlinear Dynamics, 1, pp. 113-124. ISSN 2164 − 6457.

Costa, João and Ortigueira, Manuel and Batista, Arnaldo and Paiva, Luis (2012) An Automatic Sleep Spindle Detector based on WT, STFT and WMSD. World Academy of Science, Engineering and Technology, 68, pp. 2155-2157.

Ortigueira, Manuel D. (2012) Comments on “The fractional Laplace transform”. Signal, Image and Video Processing. ISSN 1863-1703. eISSN 1863-1711. URL: http://dx.doi.org/10.1007/s11760-012-0360-y.

Ortigueira, Manuel D. and RIVERO, MARGARITA and Trujillo, Juan J. (2012) The incremental ratio based causal Fractional Calculus. International Journal of Bifurcation and Chaos, 22 (04), p. 1250078. ISSN 0218-1274. eISSN 1793-6551. URL: http://dx.doi.org/10.1142/S0218127412500782.

Ortigueira, Manuel D. and Magin, Richard L. and Trujillo, Juan J. and Velasco, M. Pilar (2012) A real regularised fractional derivative. Signal, Image and Video Processing, 6 (3), pp. 351-358. ISSN 1863-1703. eISSN 1863-1711. URL: http://dx.doi.org/10.1007/s11760-012-0320-6.

Ortigueira, Manuel D. and Magin, Richard L. and Trujillo, Juan J. and Velasco, M. Pilar (2012) A real regularised fractional derivative. Signal, Image and Video Processing, 6 (3), pp. 351-358. ISSN 1863-1703. eISSN 1863-1711. URL: http://dx.doi.org/10.1007/s11760-012-0320-6.

Ortigueira, Manuel Duarte and Trujillo, Juan J. (2012) A unified approach to fractional derivatives. Communications in Nonlinear Science and Numerical Simulation, 17 (12), pp. 5151-5157. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2012.04.021.

Ortigueira, Manuel Duarte and Rodríguez-Germá, Luis and Trujillo, Juan J. (2011) Complex Grünwald–Letnikov, Liouville, Riemann–Liouville, and Caputo derivatives for analytic functions. Communications in Nonlinear Science and Numerical Simulation, 16 (11), pp. 4174-4182. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2011.02.022.

Ortigueira, Manuel D. and Machado, J.A.Tenreiro and Trujillo, Juan J. and Vinagre, Blas M. (2011) Fractional signals and systems. Signal Processing, 91 (3), p. 349. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2010.08.002.

Ortigueira, Manuel Duarte and Trujillo, Juan J. (2011) Generalized Grünwald–Letnikov Fractional Derivative and Its Laplace and Fourier Transforms. Journal of Computational and Nonlinear Dynamics, 6 (3), 034501. ISSN 1555-1423. URL: http://dx.doi.org/10.1115/1.4003136.

Ortigueira, Manuel Duarte and Trujillo, Juan J. (2011) Generalized Grünwald–Letnikov Fractional Derivative and Its Laplace and Fourier Transforms. Journal of Computational and Nonlinear Dynamics, 6 (3), 034501. ISSN 1555-1423. URL: http://dx.doi.org/10.1115/1.4003136.

Magin, Richard and Ortigueira, Manuel Duarte and Podlubny, Igor and Trujillo, Juan (2011) On the fractional signals and systems. Signal Processing, 91 (3), pp. 350-371. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2010.08.003. (ISI Web of Science, Citations: 4).

Ortigueira, Manuel Duarte (2010) On the Fractional Linear Scale Invariant Systems. IEEE Transactions on Signal Processing, 58 (12), pp. 6406-6410. ISSN 1053-587X. eISSN 1941-0476. URL: http://dx.doi.org/10.1109/TSP.2010.2077633. (ISI Web of Science).

Ortigueira, Manuel D. and Coito, Fernando J. (2010) System initial conditions vs derivative initial conditions. Computers & Mathematics with Applications. ISSN 0898-1221. URL: http://dx.doi.org/10.1016/j.camwa.2009.08.036. (ISI Web of Science, Citations: 4).

Ortigueira, Manuel Duarte (2010) The fractional quantum derivative and its integral representations☆. Communications in Nonlinear Science and Numerical Simulation, 15 (4), pp. 956-962. ISSN 1007-5704. URL: http://dx.doi.org/10.1016/j.cnsns.2009.05.026. (ISI Web of Science, Citations: 3).

ORTIGUEIRA, M (2009) Comments on “Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions”. Applied Mathematical Modelling, 33 (5), pp. 2534-2537. ISSN 0307-904X. URL: http://dx.doi.org/10.1016/j.apm.2008.05.018. (ISI Web of Science, Citations: 2).

Ortigueira, MD (2009) Comments on “Modeling fractional stochastic systems as non-random fractional dynamics driven Brownian motions”. Applied Mathematical Modelling, 33 (5), pp. 2534-2537. ISSN 0307-904X. URL: http://dx.doi.org/10.1016/j.apm.2008.05.018. (ISI Web of Science, Citations: 2).

Ktonas, P.Y. and Golemati, S. and Xanthopoulos, P. and Sakkalis, V. and Ortigueira, M.D. and Tsekou, H. and Zervakis, M. and Paparrigopoulos, T. and Bonakis, A. and Economou, N.T. (2009) Time–frequency analysis methods to quantify the time-varying microstructure of sleep EEG spindles: Possibility for dementia biomarkers? Journal of Neuroscience Methods, 185 (1), pp. 133-142. ISSN 0165-0270. URL: http://dx.doi.org/10.1016/j.jneumeth.2009.09.001.

Rato, R.T and Ortigueira, Manuel and Batista, Arnaldo (2008) On the HHT, its problems, and some solutions. Mechanical Systems and Signal Processing, 22 (6), pp. 1374-1394. ISSN 0888-3270. URL: http://dx.doi.org/10.1016/j.ymssp.2007.11.028. (ISI Web of Science, Citations: 17).

Valério, Duarte and Ortigueira, Manuel Duarte and Sá da Costa, José (2008) Identifying a Transfer Function From a Frequency Response. Journal of Computational and Nonlinear Dynamics, 3 (2), 021207. ISSN 1555-1423. URL: http://dx.doi.org/10.1115/1.2833906. (ISI Web of Science).

Ortigueira, M. D. (2008) Fractional Central Differences and Derivatives. Journal of Vibration and Control, 14 (9-10), pp. 1255-1266. ISSN 1077-5463. URL: http://dx.doi.org/10.1177/1077546307087453. (ISI Web of Science, Citations: 7).

ORTIGUEIRA, M and BATISTA, A (2008) On the relation between the fractional Brownian motion and the fractional derivatives. Physics Letters A, 372 (7), pp. 958-968. ISSN 0375-9601. URL: http://dx.doi.org/10.1016/j.physleta.2007.08.062. (ISI Web of Science, Citations: 14).

Ortigueira, MD (2008) An introduction to the fractional continuous-time linear systems: the 21st century systems. IEEE Circuits and Systems Magazine, 8 (3), pp. 19-26. ISSN 1531-636X. URL: http://dx.doi.org/10.1109/MCAS.2008.928419.

Ricardo, Cesaltina N. E. and Ortigueira, Manuel D. and Gerald, José António B. (2007) New quasi-orthogonal BCH-derived sequences for CDMA applications. European Transactions on Telecommunications, 18 (7), pp. 803-810. ISSN 1124-318X. eISSN 1541-8251. URL: http://dx.doi.org/10.1002/ett.1215. (ISI Web of Science).

Ortigueira, M.D. and Serralheiro, A.J. (2007) Pseudo-fractional ARMA modelling using a double Levinson recursion. IET Control Theory & Applications, 1 (1), p. 173. ISSN 1751-8644. URL: http://dx.doi.org/10.1049/iet-cta:20050001. (ISI Web of Science, Citations: 3).

Ortigueira, MD and Serralheiro, A.J. (2006) A new least-squares approach to differintegration modeling. Signal Processing, 86 (10), pp. 2582-2591. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2006.02.013. (ISI Web of Science, Citations: 2).

Ortigueira, Manuel (2006) Riesz potential operators and inverses via fractional centred derivatives. International Journal of Mathematics and Mathematical Sciences, 2006, pp. 1-12. ISSN 0161-1712. URL: http://dx.doi.org/10.1155/IJMMS/2006/48391.

Ortigueira, Manuel (2006) A coherent approach to non-integer order derivatives. Signal Processing, 86 (10), pp. 2505-2515. ISSN 0165-1684. (ISI Web of Science, Citations: 17).

Ortigueira, Manuel and Tenreiro-Machado, J.A. and Sá da Costa, J. (2005) Which Differintegration? IEE Proceedings Vision, Image & Signal Processing, 152 (6), pp. 846-850. ISSN 1350-245X. (ISI Web of Science, Citations: 14).

Inácio, J. A. and Gerald, J. A. and Ortigueira, Manuel (2005) New PN Even Balanced Sequences for spread spectrum systems. EURASIP Journal on Wireless Communications and Networking, 2005 (3), pp. 447-458. ISSN 1687-1472.

Ortigueira, Manuel (2005) Two new integral formulae for the Beta function. International Journal of Applied Mathematics, 18 (1), pp. 109-116. ISSN 1992-9978.

Ortigueira, MD and Batista, AG (2004) A Fractional Linear System View of the Fractional Brownian Motion. Nonlinear Dynamics, 38 (1-4), pp. 295-303. ISSN 0924-090X. (ISI Web of Science, Citations: 12).

Ortigueira, Manuel and Coito, Fernando (2004) From Differences to Derivatives. Fractional Calculus & Applied Analysis, 7 (4), pp. 459-471. ISSN 1311-0454. URL: http://www.math.bas.bg/~fcaa/.

Ortigueira, Manuel (2003) A new symmetric fractional B-spline. Signal Processing, 83 (11), pp. 2311-2318. ISSN 0165-1684. (ISI Web of Science, Citations: 1).

Ortigueira, Manuel (2003) On the initial conditions continuous-time fractional linear systems. Signal Processing, 83 (11), pp. 2301-2309. ISSN 0165-1684. (ISI Web of Science, Citations: 24).

Goes, João and Paulino, Nuno and Ortigueira, Manuel (2002) A Digital-Domain Self-Calibration Technique for Video-Rate Pipeline A/D Converters Using Gaussian-White Noise. IEE Electronics Letters, 38 (19), pp. 1100-1101.

Ortigueira, Manuel and Matos, C. and Piedade, M.S. (2002) Fractional Discrete-Time Signal Processing: Scale Conversion and Linear Prediction. Nonlinear Dynamics, pp. 173-190. (ISI Web of Science, Citations: 2).

Book

Ortigueira, MD (2011) Fractional Calculus for Scientists and Engineers. Lecture Notes in Electrical Engineering, 84 . Springer-Verlag. ISBN 978-94-007-0746-7. eISBN 978-94-007-0747-4. ISSN 1876-1100. eISSN 1876-1119. URL: http://dx.doi.org/10.1007/978-94-007-0747-4.

Ortigueira, Manuel (2005) Processamento Digital de Sinais. Fundação Calouste Gulbenkian.

Book Section

Ortigueira, MD (2011) The Fractional Quantum Derivative and the Fractional Linear Scale Invariant Systems. In: Fractional Calculus for Scientists and Engineers. Lecture Notes in Electrical Engineering, 84 . Springer-Verlag, pp. 123-144. ISBN 978-94-007-0746-7. eISBN 978-94-007-0747-4. ISSN 1876-1100. eISSN 1876-1119. URL: http://dx.doi.org/10.1007/978-94-007-0747-4_6.

Rato, Raul and Ortigueira, MD and Batista, AG (2009) The Empirical Mode Decomposition an Useful Tool for Signal Analysis. In: New Signal Processing Research. Nova Science Publishers, Inc.,, pp. 455-475. ISBN 978-1-60456-479-2.

Ortigueira, MD (2009) Fractional Derivatives and Linear Systems. In: Mobile Computing Research and Applications. Computer Science, Technology and Application . Nova Science Publishers, Inc., pp. 219-269. ISBN 978-1-60741-101-7.

Ortigueira, MD (2007) Riesz Potentials as Centred Derivatives. In: Advances in Fractional Calculus. Springer Netherlands, pp. 93-112. ISBN 978-1-4020-6041-0. eISBN 978-1-4020-6042-7. URL: http://dx.doi.org/10.1007/978-1-4020-6042-7_7. (ISI Web of Science).

Conference or Workshop Item

Mera, Diogo and Tavares, Goncalo and Ortigueira, Manuel (2015) An Alternative Method for ARMA(p, q) Model Characterization of Multipath Fading Channels. [Paper]. In: 2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 11-14 May 2015 , Glasgow, United Kingdom. URL: http://dx.doi.org/10.1109/VTCSpring.2015.7145681.

Ortigueira, Manuel D. (2014) On the “walking dead” derivatives: Riemann-Liouville and Caputo. [Paper]. In: ICFDA'14 International Conference on Fractional Differentiation and Its Applications 2014, 23-25 June 2014 , Catania . URL: http://dx.doi.org/10.1109/ICFDA.2014.6967433.

Costa, João Caldas and Ortigueira, Manuel Duarte and Batista, Arnaldo and Paiva, Teresa (2013) ARMA Modelling for Sleep Disorders Diagnose. [Paper]. In: 4th IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2013, APR 15-17, 2013 , Costa de Caparica, Portugal. URL: http://dx.doi.org/10.1007/978-3-642-37291-9_29.

Ortigueira, Manuel and Coito, Fernando and Trujillo, Juan J. (2013) A New Look into the Discrete-Time Fractional Calculus: Derivatives and Exponentials. [Paper]. In: 6th Workshop on Fractional Differentiation and Its Applications, 2013-02-04 to 2013-02-06, WTC, Grenoble, France. URL: http://dx.doi.org/10.3182/20130204-3-FR-4032.00076.

Ortigueira, Manuel and Coito, Fernando J. and Trujillo, Juan (2013) A New Look into the Discrete-Time Fractional Calculus: Transform and Linear Systems. [Paper]. In: 6th Workshop on Fractional Differentiation and Its Applications, 4 a 6 de Fev. 2013, WTC, Grenoble, France. URL: http://dx.doi.org/10.3182/20130204-3-FR-4032.00078.

Balachandraj, K and Govindaraj, V and Ortigueira, Manuel D. and RIVERO, MARGARITA and Trujillo, Juan J. (2013) Observability and Controllability of Fractional Linear Dynamical Systems. [Paper]. In: 6th Workshop on Fractional Differentiation and Its Applications, 4 a 6 de Fev. 2013, WTC, Grenoble, France. URL: http://dx.doi.org/10.3182/20130204-3-FR-4032.00081.

Matos, Carlos and Ortigueira, Manuel Duarte (2012) A New Approach to Rational Discrete-Time Approximations to Continuous-Time Fractional-Order Systems. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS 2012, February 27-29, 2012, Costa de Caparica, Portugal. URL: http://dx.doi.org/10.1007/978-3-642-28255-3_27.

Costa, João Caldas and Ortigueira, Manuel Duarte and Batista, Arnaldo (2012) Short Time Fourier Transform and Automatic Visual Scoring for the Detection of Sleep Spindles. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS 2012, February 27-29, 2012, Costa de Caparica, Portugal. URL: http://dx.doi.org/10.1007/978-3-642-28255-3_29.

Costa, João and Ortigueira, Manuel and Batista, Arnaldo and Paiva, Luis (2012) Threshold choice for automatic spindle detection. [Paper]. In: 19th International Conference on Systems, Signals and Image Processing (IWSSIP), 11-13 April 2012, Vienna.

Ortigueira, Manuel D. (2012) Two-sided discrete fractional derivatives and systems. [Paper]. In: International Conference of Numerical Analysis and Applied Mathematics (ICNAAM), SEP 19-25, 2012 , Kos, GREECE. URL: http://dx.doi.org/10.1063/1.4756424.

Ortigueira, MD and Trujillo, Juan J. (2012) A relation between the fractional derivative and the Hilbert transform. [Paper]. In: 7th Vienna International Conference on Mathematical Modelling, 2012-02-14 a 2012-02-17, Vienna University of Technology, , Vienna Austria. URL: http://dx.doi.org/10.3182/20120215-3-AT-3016.00106.

Ortigueira, Manuel D. and Trujillo, Juan J. (2012) A unified approach to fractional derivatives. [Paper]. In: 7th International ASME/IEEE Conference on Mechatronics & Embedded Systems and Applications, 28-31 agosto de 2011, Washington, DC, EUA.

Costa, João Caldas and Ortigueira, Manuel Duarte and Batista, Arnaldo (2011) ARMA Modelling of Sleep Spindles. [Paper]. In: 13th IFIP WG 5.5 Working Conference on Virtual Enterprises, PRO-VE 2012, October 1-3, 2012, Bournemouth, UK. URL: http://dx.doi.org/10.1007/978-3-642-19170-1_37.

Almeida, R. and Ortigueira, M. and BATISTA, A and Ktonas, P. (2011) Sleep spindles: Decomposition, parameterization and applications. [Paper]. In: 19th Signal Processing and Communications Applications Conference (SIU), 20-22 April 2011, Antalya. URL: http://dx.doi.org/10.1109/SIU.2011.5929867.

Cardoso, Eduardo and Batista, Arnaldo and Rodrigues, Rui and Ortigueira, Manuel and Bárbara, Cristina and Martinho, Cristina and Rato, Raul (2010) A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_41. (ISI Web of Science).

Matos, Carlos and Ortigueira, Manuel Duarte (2010) Fractional Filters: An Optimization Approach. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_39. (ISI Web of Science).

Nascimento, Bruno and Batista, Arnaldo and Alves, Luis Brandão and Ortigueira, Manuel and Rato, Raul (2010) MicroECG: An Integrated Platform for the Cardiac Arrythmia Detection and Characterization. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_40. (ISI Web of Science).

Gomes, Rui and Batista, Arnaldo and Ortigueira, Manuel and Rato, Raul and Baldeiras, Marco (2010) Railscan: A Tool for the Detection and Quantification of Rail Corrugation. [Paper]. In: Doctoral Conference on Computing, Electrical and Industrial Systems - DoCEIS'10, 22-24 February 2010, Caparica, Lisbon - Portugal. URL: http://dx.doi.org/10.1007/978-3-642-11628-5_44. (ISI Web of Science).

Matos, C. and Batista, AG and Ortigueira, MD (2009) FILTERS: Fractional vs Integer order. [Paper]. In: Symposium on Fractional Signals and Systems, Lisbon’09, 4-6 November, 2009, FCT/UNL, Portugal.

Ortigueira, MD and Trujillo, JJ (2009) Generalized GL Fractional Derivative and its Laplace and Fourier Transform. [Paper]. In: ASME 2009 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2009, August 30 - September 2, 2009, San Diego, California, USA.

Ortigueira, MD (2009) On the Linear Scale Fractional Systems: An Application of the Fractional Quantum Derivative. [Paper]. In: On the Linear Scale Fractional Systems: An Application of the Fractional Quantum Derivative, 2-5 July 2009., Milan, Italy. (ISI Web of Science).

Ortigueira, MD and Batista, AG (2008) A new look at the fractional Brownian motion definition. [Paper]. In: Sixth International Conference on Multibody Systems, Nonlinear Dynamics and Control (MSNDC), ASME IDETC07, 4-7 Sep 2007, Las Vegas, Nevada, USA. (ISI Web of Science).

Rato, R.T and Ortigueira, M. and Batista, Arnaldo (2008) The EMD and its use to identify system modes. [Paper]. In: International Workshop on New Trends in Science and Technology (NTST2008), 3-4 Nov 2008, Ankara.

Coito, Fernando and Ortigueira, Manuel (2008) Fractional Controller Design Trough Multi-Objective Optimization. [Paper]. In: 8th Portuguese Conference on Automatic Control – CONTROLO’2008, 21 - 23 July 2008, Vila Real - Portugal.

Ortigueira, Manuel (2008) The Fractional Quantum Derivative and the Generalised Euler-Cauchy Equation. [Paper]. In: 2nd Conference on Nonlinear Science and Complexity, NSC08, 28-31 Jul 2008, Porto, Portugal.

Ortigueira, Manuel Duarte and Valério, Duarte and Sá da Costa, José (2008) Identifying a Transfer Function From a Frequency Response. [Paper]. In: Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C, 4-7 Sep 2007, Las Vegas. URL: http://dx.doi.org/10.1115/DETC2007-35256. (ISI Web of Science).

Ortigueira, Manuel and Coito, Fernando (2008) The Initial Conditions of Riemann-Liouville and Caputo Derivatives. [Other]. In: 6th EUROMECH Conference ENOC 2008, 30 June - 4July 2008, Saint Petersburg - RUSSIA.

Ortigueira, M. and Coito, F. (2008) Initial Conditions: What Are We Talking About? [Paper]. In: 3rd IFAC Workshop on Fractional Differentiation and its Applications, 5-7 Nov 2008, Ankara - Turquia.

Ortigueira, M. (2008) A fractional quantum derivative. [Paper]. In: 3rd IFAC Workshop on Fractional Differentiation and its Applications, 5-7 Nov 2008, Ankara - Turquia.

Ortigueira, MD (2007) Riesz potentials as centred derivatives. [Paper]. In: 2nd Symposium on Fractional Derivatives and Their Applications, 24-28 Sep 2005, Long Beach, CA, USA. URL: http://dx.doi.org/10.1007/978-1-4020-6042-7. (ISI Web of Science).

Ortigueira, Manuel (2007) A Non Integer Order Quantum Derivative. [Paper]. In: Symposium on Applied Fractional Calculus (SAFC07), October 15-17, Industrial Engineering School (University of Extremadura), Badajoz (Spain).

Ktonas, P.Y. and Golemati, S. and Xanthopoulos, P. and Sakkalis, V. and Ortigueira, M.D. and Tsekou, H. and Zervakis, M. and Paparrigopoulos, T. and Soldatos, C.R. (2007) Potential dementia biomarkers based on the time-varying microstructure of sleep EEG spindles. [Paper]. In: 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 22-26 Aug. 2007, Lyon, France. URL: http://dx.doi.org/10.1109/IEMBS.2007.4352827. (ISI Web of Science, Citations: 2).

Ortigueira, Manuel and Coito, Fernando (2007) Revisiting the Initial Conditions Problem in Fractional Linear Systems. [Other]. In: Symposium on Applied Fractional Calculus (SAFC07), October 15-17, Industrial Engineering School (University of Extremadura), Badajoz (Spain).

Xanthopoulos, P. and Golemati, S. and Sakkalis, V. and Ktonas, P. Y. and Ortigueira, Manuel and Zervakis, M. and Paparrigopoulos, T. and Tsekou, H. and Soldatos, C. R. (2006) Comparative analysis of time-frequency methods estimating the time-varying microstructure of sleep EEG spindles. [Paper]. In: Information Technology Applications in Biomedicine, 26-28 Oct. 2006, Ioannina - Epirus, Greece.

Ortigueira, Manuel and Batista, Arnaldo (2006) On the fractional derivative of stationary stochastic processes. [Paper]. In: CST2006 & ECT2006 Conferences, 12-15 Sept 2006, Gran Canaria (ES).

Ortigueira, Manuel (2006) Fractional Centred Differences and Derivatives. [Other]. In: Proceedings of the 2nd IFAC Workshop on Fractional Differentiation and its Applications, Julho 2006, Porto.

Ortigueira, Manuel (2005) Fractional Differences Integral Representation and its use to define Fractional Differintegrations. [Paper]. In: the ENOC-2005, Fifth EUROMECH Nonlinear Dynamics Conference, 07-12 Aug 2005, Eindhoven University of Technology, The Netherlands.

Ortigueira, Manuel (2005) A new look at the differintegration definition. [Paper]. In: ENOC-2005, Fifth EUROMECH Nonlinear Dynamics Conference, 07-12 Aug 2005, Eindhoven University of Technology, The Netherlands.

Pinto, I. V. and Alves, L. B. and Ortigueira, Manuel and Batista, Arnaldo (2005) ECG Wave Detector and Delineation with Wavelets. [Paper]. In: International Conference on Computational Intelligence in Medicine and Healthcare, CIMED 2005, Costa Caparica (PT).

Rato, Raul and Ortigueira, Manuel (2005) A Modified EMD Algorithm for Application in Biomedical Signal Processing. [Paper]. In: International Conference on Computational Intelligence in Medicine and Healthcare, CIMED 2005, Costa Caparica (PT).

Ricardo, C. N. and Gerald, J. A. and Ortigueira, Manuel (2005) Analysis of New Quasi-Orthogonal BCH-Derived Sequences for CDMA Applications. [Paper]. In: XX Conference on Design of Circuits and Integrated Systems (DCIS'05), 23-25 Nov 2005, Lisboa, Portugal.

Ortigueira, Manuel and Tenreiro-Machado, J.A. and Sá da Costa, J. (2004) Considerations about the choice of a differintegrator. [Paper]. In: International Conference on Computacional Cybernetics, 30 Aug - 01 Sept 2004, Vienna. (ISI Web of Science).

Ortigueira, Manuel and Serralheiro, A.J. (2004) New Insights into Pseudo-Fractional ARMA Modelling. [Paper]. In: International Conference on Computacional Cybernetics, 30 Aug - 01 Sept 2004, Vienna University of Technology. (ISI Web of Science).

Unterweissacher, Martin and Goes, João and Paulino, Nuno and Evans, Guiomar and Ortigueira, Manuel (2003) Efficient Digital Self-Calibration of Video-Rate Pipeline ADCs using White Gaussian Noise. [Paper]. In: IEEE International Symposium on Circuits and Systems, Bangkok, Thailand. (ISI Web of Science).

Evans, Guiomar and Goes, João and Steiger-Garção, Adolfo and Ortigueira, MD and Paulino, Nuno and Sousa-Lopes, J. (2003) Low-voltage low-power CMOS analogue circuits for Gaussian and uniform noise generation. [Paper]. In: IEEE International Symposium on Circuits and Systems, MAY 25-28, 2003, Bangkok, Thailand. (ISI Web of Science).

Ricardo, C. N. and Inácio, J. A. and Gerald, J. A. and Ortigueira, MD (2003) New BCH-Derived Sequences for CDMA Systems. [Paper]. In: 46th IEEE - Midwest Symposium on Circuits and Systems, 27 a 30 de Dezembro de 2003, Cairo, Egipto. (ISI Web of Science).

Carvoeiras, P. and Rodrigues, M. and Batista, Arnaldo and Ortigueira, Manuel (2003) Um software protótipo para Diagnóstico da Fibrilhação Auricular. [Paper]. In: XXIV Congresso Português de Cardiologia.

Ortigueira, Manuel (2002) A new approach to the initial value problem. [Other]. In: 5th Portuguese Conference on Automatic Control, September, 5-7, 2002, Aveiro, Portugal.

Journal Editor

Ortigueira, MD and Machado, JAT, eds (2006) Fractional calculus applications in signals and systems. Signal Processing, 86 (10), pp. 2503-2504. ISSN 0165-1684. URL: http://dx.doi.org/10.1016/j.sigpro.2006.02.001. (ISI Web of Science, Citations: 13).

Ortigueira, Manuel and Machado, J. A., eds (2003) Special Issue on Fractional signal Processing and applications. Signal Processing, 83 (11), pp. 2285-2286. ISSN 0165-1684. (ISI Web of Science, Citations: 31).

Thesis

Cardoso, Eduardo (2010) Classificação automática do sono: contribuição utilizando distância de itakura-saito e wavelets. Batista, Arnaldo and Ortigueira, Manuel and Rodrigues, Rui (supervisors). Masters thesis, FCT-UNL.

Simons, Lara (2009) Automatic sleep apnea detection and sleep classification using the ECG and the Sp02 signals. Batista, Arnaldo and Ortigueira, Manuel (supervisors). Masters thesis, FCT-UNL.

Nascimento, Bruno (2009) MicroECG: an integrated platform for the cardiac arrythmia detection and characterization. Batista, Arnaldo and Alves, Luís and Ortigueira, Manuel (supervisors). Masters thesis, FCT-UNL.

Baía, Pedro (2009) Processamento de sinais ECG: Variabilidade da frequência cardíaca. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

Barreiros, Diogo (2008) Detecção e análise do Potencial Evocado P300. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

Leitão, Diogo N. (2008) Análise de Fusos do Sono: decomposição e desmodulação de sinal. Ortigueira, Manuel (supervisor). Masters thesis, FCT-UNL.

This list was generated on Sun Mar 26 14:11:43 2017 GMT Daylight Time.